/Engine/Source/Editor/UnrealEd/Public/SListViewSelectorDropdownMenu.h
This is a container widget to help refocus to a listview widget from a searchbox or other text box widgets that are used in conjunction. Will refocus when the up or down arrows are pressed, and will commit a selection when enter is pressed regardless of where focus is.
template<typename ListType> class SListViewSelectorDropdownMenu : public [SCompoundWidget](API\Runtime\SlateCore\Widgets\SCompoundWidget)